29. Graduation. Its believed that as many as 25% of
Chapter 19, Problem 29(choose chapter or problem)
29. Graduation. Its believed that as many as 25% of adultsover 50 never graduated from high school. We wish tosee if this percentage is the same among the 25 to 30 agegroup.a) How many of this younger age group must we surveyin order to estimate the proportion of non-grads towithin 6% with 90% confidence?b) Suppose we want to cut the margin of error to 4%.Whats the necessary sample size?c) What sample size would produce a margin of errorof 3%?
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